Primary peritoneal neoplasms comprise an uncommon group of heterogeneous entities, which include:
- mesothelial derivatives
- epithelial derivatives
- smooth muscle cell derivatives
- others
- desmoplastic small round cell tumour arising from the peritoneum
- solitary fibrous tumour arising in the abdomen/peritoneum
- peritoneal lymphangioma: sometimes considered as a benign neoplasm 2